Observational studyHealth and quality of life outcomes2017
Tinnitus functional index: validation of the German version for Switzerland.
Observational study in Health and quality of life outcomes, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 2 registered trials, which are not on this map. Cited by 12 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Research Project About Psychological Strain, Quality of Life and Emotional Awareness in Patients With Tinnitus
Prospektive Studie Zum Vergleich Der Beiden Validierten Deutschen Versionen Des "Tinnitus Functional Index" für Die Schweiz Und für Deutschland
Who cites it
12 citing papers in PubMed.
- An open-label, proof-of-mechanism trial evaluating a neuroactive steroid GABA modulator in tinnitus.Frontiers in neurology · 2025Trial
- Trial
- Combined drug therapy with ultrasound-guided stellate ganglion block for primary tinnitus.Medicine · 2026Article
- Tinnitus in patients with orofacial complaints.Head & face medicine · 2025Article
- A Comparative Analysis of the Efficacy of Ginkgo Biloba and Caroverine in the Management of Idiopathic Tinnitus.Indian journal of otolaryngology and head and neck surgery : official publication of the Association of Otolaryngologists of India · 2024Article
- Translation, Cultural Adaptation and Validation to Brazilian Portuguese of the Tinnitus Functional Index Questionnaire.International archives of otorhinolaryngology · 2022Article
- The correlation between tinnitus-specific and quality of life questionnaires to assess the impact on the quality of life in tinnitus patients.Frontiers in neurology · 2022Article
- Validation of a Dutch version of the Tinnitus Functional Index in a tertiary referral tinnitus clinic.Heliyon · 2021Article
- Chinese validation and clinical application of the tinnitus functional index.Health and quality of life outcomes · 2020Article
- [Validation of the Chinese version of the auditory subscale of the tinnitus functional index].Lin chuang er bi yan hou tou jing wai ke za zhi = Journal of clinical otorhinolaryngology head and neck surgery · 2020Article
- Psychometric properties of the Italian Tinnitus Functional Index (TFI).Acta otorhinolaryngologica Italica : organo ufficiale della Societa italiana di otorinolaringologia e chirurgia cervico-facciale · 2020Article
- Combining neurofeedback with source estimation: Evaluation of an sLORETA neurofeedback protocol for chronic tinnitus treatment.Restorative neurology and neuroscience · 2020Article
Corrections and comments
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundDifferent standardized questionnaires are used to assess tinnitus severity, making comparisons across studies difficult. These questionnaires are also used to measure treatment-related changes in tinnitus although they were not designed for this purpose. To solve these problems, a new questionnaire - the Tinnitus Functional Index (TFI) - has been established. The TFI is highly responsive to treatment-related change and promises to be the new gold standard in tinnitus evaluation. The aim of the current study was to validate a German version of the TFI for a German-speaking population in Switzerland.
methodsAt the ENT department of the University Hospital Zurich, 264 subjects completed an online survey including the German version for Switzerland of TFI, Tinnitus Handicap Inventory (THI), Beck Depression Inventory (BDI), Beck Anxiety Inventory (BAI) and sociodemographic variables. Internal consistency of the TFI was calculated with Cronbach's alpha coefficient. Pearson correlation coefficients were used for the test-retest reliability of the TFI and to investigate convergent and discriminant validity between the THI and the BDI and BAI, respectively. Factor analysis was assessed using a principal component analysis with oblique rotation. The different factors extracted were then compared with the original questionnaire.
resultsThe German version of the TFI for Switzerland showed an excellent internal consistency (Cronbach's alpha of 0.97) and an excellent test-retest reliability of 0.91. The convergent validity with THI was high (r = 0.86). The discriminant validity with BAI and BDI showed moderate results (BAI: r = 0.60 and BDI: r = 0.65). In the factor analysis only five factors with one main factor could be extracted instead of eight factors as described in the original version. Nevertheless, relations to the original eight subscales could be demonstrated.
conclusionThe German version of the TFI for Switzerland is a suitable instrument for measuring the impact of tinnitus. The reliability and validity of this version are comparable with the original version of the TFI. Although this study showed only five factors in the factor analysis, relations to the original eight subscales were identified. Therefore, the German version of the TFI for Switzerland can deliver relevant information regarding the different tinnitus domains.
trial registrationClinical trial registration number on clinicaltrial.gov: NCT01837368 .
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.